
Description: 33Mail is a free, ad-supported email service that emphasizes privacy and security. It offers encrypted email transmission, spam filtering, email aliases to mask your real email address, and 2GB of email storage.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: YOPmail is a free, disposable email service that allows users to sign up for a temporary email address to use for a certain period of time. It helps protect personal email privacy.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API